Data, Do-File and Appendix

�Terror After the Caliphate: The Effect of ISIS Loss of Control over Population Centers on Patterns of Global Terrorism�

Security Studies

James A. Piazza (corresponding author)
Department of Political Science, The Pennsylvania State University, University Park, PA 16801, jap45@psu.edu

Michael J. Soules
Department of Political Science, The Pennsylvania State University


Abstract

Experts opine that the Islamic State of Iraq and Syria, or ISIS, responded to its loss of control over major population centers in Iraq and Syria 
that constituted its self-described �caliphate� by internationalizing its patterns of terrorist violence, committing higher profile attacks abroad 
and exploiting sectarian conflicts in other countries. In this study we test this conventional wisdom.  We theorize that loss of population centers 
prompted ISIS to conduct more attacks abroad, to shift its attack venues abroad and to commit higher casualties abroad.  Using original time series 
data on ISIS control over major cities, we find empirical support for our theoretical assumptions.  We conclude with a brief discussion of the 
scholarly and policy implications of our findings. 

List of files:

1) Terror After the Caliphate, Piazza and Soules, Data.dta [data file, Stata]
2) Terror After the Caliphate, Piazza and Soules, Do File [do-file, Stata]
3) Terror After the Caliphate, Piazza and Soules, Appendix [Appendix Tables, Word]

